Michael Anton, a conservative scholar who serves as the State Department head of policy planning, will lead technical work on the US side, the State Department said.

"The next round of talks will take place in Oman on Saturday, and will be the first meeting of technical teams," State Department spokeswoman Tammy Bruce told reporters.

"Special Envoy Witkoff also will be present," she said.

Witkoff last met Iranian officials in Rome on Saturday, with both sides voicing optimism afterward but not offering details.

President Donald Trump, who ripped up an earlier deal with Iran in 2018, has voiced hope for a diplomatic solution on Iran's contested nuclear program and has discouraged Israel from a military strike.